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Headaches can be divided into two categories: primary headaches and secondary headaches. Migraine headaches, tension headaches, and cluster headaches are considered primary headaches. Secondary headaches are caused by disease. Headache symptoms vary with the headache type. Over-the-counter pain relievers provide short-term relief for most headaches.

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    Related Diseases & Conditions

    • Sinus Infection (Sinusitis) Sinus infection (sinusitis) signs and symptoms include headache, fever, and facial tenderness, pressure, or pain. Treatments of...learn more »
    • Dehydration Dehydration is the excessive loss of body water. There are a number of causes of dehydration including heat exposure, prolonged...learn more »
      In This Article
      Dehydration Article
      • Dehydration facts
      • What is dehydration?
      • What causes dehydration?
      • Dehydration pictures
      • What are the signs and symptoms of dehydration?
      • What about dehydration in children?
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      In This Article
      Brain Tumor Article
      • Brain tumor facts*
      • What is the brain?
      • What are the tumor grades and types?
      • Tumor grade
      • Types of primary brain tumors
      • What are the risk factors for brain tumors?
      • What are the symptoms of a brain tumor?
      • How are brain tumors diagnosed?
      • What is the treatment for a brain tumor?
      • What type of surgery is available for brain tumors?
      • Radiation therapy for brain tumors
      • Chemotherapy for brain tumors
      • What about a second opinion for brain tumor treatment?
      • Nutrition during brain tumor treatment
      • What supportive care is available for patients and caregivers?
      • What about rehabilitation after brain tumor treatment?
      • What about follow-up care after brain tumor treatment?
      • Sources of support
      • Taking part in cancer research
    • Mumps Mumps is an acute viral illness caused by the mumps virus. Symptoms of mumps include fever, headache, muscle aches, tiredness,...learn more »
      In This Article
      Mumps Article
      • Mumps facts
      • What is mumps?
      • What is the history of mumps?
      • What causes mumps? How is mumps transmitted?
      • What are risk factors for contracting mumps?
      • What are the signs and symptoms of mumps in children and adults?
      • How is mumps diagnosed?
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    • Chronic Rhinitis and Post-Nasal Drip Allergic rhinitis symptoms include an itchy, runny nose, sneezing, itchy ears, eyes, and throat. Seasonal allergic rhinitis (also...learn more »
      In This Article
      Chronic Rhinitis and Post-Nasal Drip Article
      • Chronic rhinitis and post-nasal drip facts
      • What is the purpose of the nose?
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      In This Article
      Anxiety Article
      • Generalized anxiety disorder facts
      • What is generalized anxiety disorder (GAD)?
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      • Where can people find additional information on generalized anxiety disorder?

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Terms related to Headache:

  • Pain in the Head